The Devils Island Lighthouse is a lighthouse located on Devils Island, one of the Apostle Islands, in Lake Superior in Ashland County, Wisconsin, near the city of Bayfield.

Currently owned by the National Park Service and part of the Apostle Islands National Lakeshore, it was added to the National Register of Historic Places in 1977, as reference number 77000145. Listed in the Library of Congress Historic American Buildings Survey, WI-324. Several other structures in the vicinity are also listed in HABS.

The original third order Fresnel lens manufactured by Henry-Lepaute was removed by the U.S. Coast Guard in 1989, but a new third order Fresnel lens was replaced by the N.P.S. in 1992.

The site originally had a 10-inch (250 mm) steam whistle in a fog signal building. That was removed in 1925, and "a much improved air-operated diaphone fog signal" was accomplished. In 1928, a diesel-powered electrical generator was installed, and the light intensity increased to 300,000 candela for the white flash and 180,000 candela for the red.

A previous skeletal, wooden structure was constructed in 1891 has since been demolished. Historical brick Queen Anne style keepers quarters (1896) are collocated with the current lighthouse. Also on the premises were two oil houses, a tramway, a brownstone tramway engine building, a dock, wooden boathouse (1 mile distant) and a radio beacon.

Getting there

Most of the Apostle Islands light stations may be reached on the Apostle Islands Cruise Service water taxi or by private boat during the summer. During the Annual Apostle Island Lighthouse Celebration ferry tour service is available for all the lighthouses. In the tourist season, volunteer park rangers are on the many of the islands to greet visitors.